What caused Helen Kellers disabilities?

Answer 1

Helen Keller was born with normal sight and hearing abilities. At about nineteen months of age, she was diagnosed with scarlet fever. Scarlet fever was the cause of her disabilities.

Answer 2

Helen Keller became deaf and blind as a result of a severe illness, most likely scarlet fever or meningitis, that she contracted at the age of 19 months. This illness left her unable to see, hear, or speak for the rest of her life.